So this is what I came up with. I figured Id do three variations based around my initial idea of the large snakes supporting her. The second design is the closest to what I originally envisioned, so thats the one I chose.

If you want to see the head design in more detail it can be found here [link]

Just checked out the WIP shots and its very exciting to see. Have you thought about bringing the awesome texture you have for the face down to other parts of the body? For example, setting the hands apart with that sort of plagued snake zombie look the face has. Or having a subtle change to the feet like they were on their way to morphing into one of the other designs. I'm sure its going to turn out great though after looking at your other work, I especially liked the creature design.